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contribution by John III Sobieski

...which all other foreign relations were closely connected. When the Russians, traditionally Poland’s enemies, showed willingness to join the league against the Turks, Sobieski concluded with them the “Eternal” Peace of 1686 (the Grzymułtowski Peace). In this treaty, Kiev, which had been under temporary Russian rule since 1667, was permanently ceded by Poland. But despite all...